G14E Acelerator Switch issues

I kept blowing the 10Amp fuse when the acelerator pedal is pressed, so after diagnosing with a service manual downloaded found that the acelerator switch was no good, I replaced it and ran cart for about an hour 10 to 15 min runs with a few min rest between runs. then POW no power and blew the fuse again, check swich no good, so the question is What would cause this switch to go bad? Where can i look next, I would hate to spend the money on a new switch only to kill that one too.

Pete